ML20215G240

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Confirms 861008 Telcon Noting That Subcooled Margin Monitor Instrument Loop Uncertainty Will Not Be Provided W/Response to Generic Ltr 86-06, ...Tmi Action Item II.K.3.5,Automatic Trip of Reactor Coolant Pumps. Info to Be Sent by 861124
ML20215G240
Person / Time
Site: Calvert Cliffs  Constellation icon.png
Issue date: 10/14/1986
From: Tiernan J
BALTIMORE GAS & ELECTRIC CO.
To: Thadani A
Office of Nuclear Reactor Regulation
References
TASK-2.K.3.05, TASK-TM GL-86-06, GL-86-6, NUDOCS 8610200276
Download: ML20215G240 (2)


Text

1 BALTIMORE GAS AND ELECTRIC CHARLES CENTER P. O. BOX 1475 BALTIMORE, MARYLAND 21203 JOSEPH A.TIERNAN VICE FRESIDENT NUCLEAR ENERGY October 14,1986 U. S. Nuclear Regulatory Commission Office of Nuclear Reactor Regulation Washington, D. C. 20555 ,

ATTENTION: Mr. Ashok C. Thadani, Director ,

PWR Project Directorate #8 Division of PWR Licensing-B

SUBJECT:

Calvert Cliffs Nuclear Power Plant Unit Nos.1 & 2; Docket Nos. 50-317 & 50-318 Response to Generic Letter 86-06, " Implementation of TMI Action item II.K.3.5, Automatic Trip of Reactor Coolant Pumps"

REFERENCES:

(a) Telephone conversation between Mr. L. S. Larragoite (BG&E) and Mr. S. A. McNeil (NRC), October 8,1986, same subject (b) Generic Letter 86-06, Implementation of TMI Action item II.K.3.5, " Automatic Trip of Reactor Coolant Pumps," dated May 29,1986 (c) Telephone conversation between Mr. L. S. Larragoite (BG&E) and Mr. S. A. McNeil (NRC), July 15,1986, same subject Gentlemen:

As discussed in Reference (a), we will not be providing our Subcooled Margin Monitor's (SMMs) instrument loop uncertainty with our response to Reference (b). We are presently working with the SMMs vendor (Combustion Engineering) to refine the loop uncertainty calculations for adverse containment conditions. We expect to provide this data by November 24, 1986. You will receive all other information requested by Generic Letter 86-06 as scheduled in Reference (c).

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8610200276 861014 PDR ADOCK 05000317 f P PDR i o

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Mr. Ashok C. Thadani October 14,1986 j . Page 2 i

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< Should you have any questions regarding this matter, we will be pleased to discuss them with you.

Very truly yours, ,

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3 MO i

JAT/LSL/gla cc
D. A. Brune, Esquire
3. E. Silberg, Esquire S. A. McNeil, NRC T. Foley, NRC

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